Container spinning machine



March 20, 1951 J. R. BAUMGARTNER ETAL CONTAINER SPINNING MACHINE 3Sheets-Sheet 1 Filed June 4, 1949 Joizrz n March 1951 J. R. BAUMGARTNEREI'AL 2,545,912

I CONTAINER SPINNING momma Filed June 4, 1949 z Sheets-Sheet 2 IIIIIIIIIWlI/A g frzueraiora- Jo/zrzJZHazwz arrze Johny? 6Z6, l

March 20, 1951 J. R. BAUMGARTNER ETAL 2,545,912

CONTAINER SPINNING MACHINE Filed June 4, 1949 3 Sheefcs-Sheet 3 1! m gma Z 6 BY Jo/z/z 6 56M Patented Mar. 20, 1951 CONTAINER SPINNING MACHINEJohn R. Baumgartner, Milwaukee, Wis., and John G. Bell, Chicago, Ill.,assignors, by mesne as signments, to Morris Paper Mills, Chicago, 111.,a corporation of Illinois Application June 4, 1949, Serial No. 97,148

The present invention relates to carton forming machines and moreparticularly to a machine for forming beaded or rolled edges oncylindrical containers.

In manufacturing cartons such as containers for .ice cream or othersemi-liquid products, it hasbeen found desirable to have either doubleor .single side walls formed from a single strip of relatively lightpaper. The ,upper, lower, or both margins may be rolled; one of them maybe rolled inwardlyand the other outwardly. The covers of thesecontainers are sometimes formed from a single strip of paper and havethe upper margin rolled. I

When the side wall of the container and the rim of the cover are madefrom lightweight paper, it is somewhat of a problem to spin the roll onthe margins without collapsing or damaging the side walls,,particularlywhere there is some weakness in the paper. This is particularly truewhere the spin is inwardly rather than outwardly. I

It is, therefore, an object of the present invention to provide amachine which may be readily adapted to spin either an inward or outwardroll on containers and covers.

Another object is to provide a machine which is readily adaptable tospin the rims of containers of varying heights.

A further object is to provide a machine which will spin an inward rollon relatively light paper stock without damaging it.

Another object is to provide a machine which will spin a uniform inwardor outward roll on containers and covers.

With these and various other objects in view, the invention may consistof certain novel features of construction and operation, as will befully described and particularly pointed out in the specification,drawings and claims appended hereto.

In the drawings, in which like reference char-. acters are used todesignate like parts,

Fig. 1 is a side elevational view of a machine embodying the invention,the side wall of the lower cabinet being removed to more clearly showthe interior thereof;

Fig. 2 is a fragmentary plan view of the indexing latch;

Fig. 3 is an elevation in cross section taken on the line 3-3 of Fig.1;

Fig. 4 is a fragmentary elevation in cross sec-.

tion showing the retaining cylinder and arbor and a can clamp forholding the side wall of a container of 1555 height than shown inFig. 3;

2 Claims. (01. 93-365) Fig. 5 is an end elevational view angularlydisplaced ninety degrees from Fig. 1;

Fig. 6 is an enlarged fragmentary cross sec tion showing the spinnerhead in engagement with the upper portion of a container side wall onwhich anoutwarclroll has been formed;

Fig. '7 is an enlarged fragmentary cross section similar to Fig. 6, butshowing an inward roll on the upper portion of the container wall and anoutward roll on the lower portion;

Fig. 8 is an enlarged fragmentary cross section showing a spinner headforming an inward roll on the upper-edge of a container cover;

Fig. 9 is an enlarged fragmentary cross section showing a floating arborin its uppermost position within a container wall and an improvedspinner head for forming an inward roll; and

Fig. 10 is an enlarged fragmentary top plan I view of the spinner headshown in Fig; 9.

the table [2.

In the drawings, particularly Figs. 1 and 5, the invention is shown asembodied in a table or supporting surface l2 which has side walls orpanels I4 for enclosing the under portion. Brackets [6 are secured tothe upper surface of The spinning arm I8 is pivotally mounted at one endon the shaft 20, which is journaled in thebrackets I6.

The outer end of the spinning arm IB- is provided with a suitablebearing in which the spine;

ning shaft 22 is mounted. A gear 24 is securedto the upper end of theshaft 22 by the nut 26. A vertically extending bracket 28 is provided onthe upper surface of the spinning arm [8 to which the electric motor 30is secured, with the axis of rotation of its shaft 32 in a planesubstantially normal to that of the arm [8. A reduction gear 34 issecured to the shaft 32 of the motor and is in mesh with the gear 24 onthe spinningshaft 22 so that the speed of rotation of the spinning shaftis considerably less than that of the motor.

The spinner head 36 is threaded to the shaft 22. Spinner heads of thetype shown in Figs. 1, 3, 6, 7 and 8 may'have the spinning groovesformed in detachable flanges 38 which are secured to the spinner headsby set screws 4!). The spinner heads or flanges may be quickly changedfor various spinning operations.

A circular positioning device or turntable 42 is rotatably mounted onthe table l2 which is provided with a journal 44 for supporting theshaft 46; The turntable 42 is provided with two diametrically opposedstations, each of which is horizontal position and when the turntable iseach of two predetermined positions. These positions are determined bythe indexing mechanism consisting of notches 48 in the turntable and aspring pressed latch 50 on the table I2 adjacent the perimeter of theturntable, as shown in detail in Fig. 2. The turntable is manuallyrotatable so that when the latch 55 is in engagement with one of thenotches 48, one of the stations is in alignment with the spinner headand when the turntable is rotated 180, the other station is so aligned.It is obvious that more than two stations may be provided.

Mounted on the turntable 42 at each of the stations is a retainincylinder 52 having a circumference substantially that of the interior ofthe container wall and having a height approximately that of the tallestcontainer that is contemplated. As shown more clearly in Figs. 3, 4 and7, a flange or ring 54 encircles the base of the retaining wall 52 andis provided with an interior annular offset portion 55 adjacent itsupper margin in which the side wall of the container 56 is supported. Asshown in Figs. 3 and 7. the ring is of such a height as to support acontainer wall of considerably greater height than that shown in Fig. 4.In Fig. 'I, the container wall has an outward roll on its bottom edgeand this will not enter the offset portion 55 in the ring, with theresult that the upper margin is presented at the proper altitude forspinning.

The upper margin would otherwise be too low if the bottom margin werealready rolled. When the ring is in position, the space between theannular offset portion and the side of the retaining cylinder is such asto accommodate the side wall of the container prior to being rolled.

The same is true of the ring 58 shown in Fig. 9, which is a modifiedembodiment. The ring 58 is similar to the ring 54, but consists of twosegments which are hinged together and have a snap clamp 60 at theirfree ends. The interior faces of the segments of the ring are providedwith a plurality of studs 62 which engage in openings or depressions inthe exterior surface of the retaining cylinder 52. These depressions areat predetermined levels, and the ring may be raised or lowered,depending on the desired height of the container, by merely unsnappingthe clamp 60 and moving it so that the studs 62 engage the depressionsin the retaining cylinder 52 at the desired level.

A pair of brackets 54 secured to the underside of the table I2 supportsa self-contained gear box having an ecentric 56 at one end and a clutch68 at the other, with the gear I intermediate. A connecting rod I2 ispivotally connected at one end to the eccentric E6 and passes throughthe table I2, having the other end pivotally connected to the under partof the spinner arm I8.

A pair of brackets I4 are secured to the under surface of the table andprovide journals for the shaft I6 on which the worm gear I8 isnonrotatably mounted. The gear I8 is positioned to mesh with and drivethe gear III. A pulley 80 is non-rotatably mounted on one end of theshaft I6.

A motor 82 is mounted below the table I2 on brackets 84, which aresecured to the platform 86, and is provided with a pulley 88 which is inalignment with the pulley 80. A belt 90 operatively connects pulleys 80and 88.

.A solenoid 92 is mounted on the bracket 94 secured to the platform 86.The solenoid plunger 96 is connected to the clutch actuating arm 98. Thesolenoid 92 is electrically connected by suitable wiring I00 to thepedal switch I02. The

clutch indicated generally at 58 may be of any type that will interruptthe drive from the worm gear I8 to the eccentric 56.

A bracket IE4 is secured to the upper surface of the table I2 betweenthe rod I2 and the turntable 42. A pair of levers IE6 each has one endpivotally connected to the bracket I54 and positioned one in front ofthe other with their pivots in substantially the same horizontal plane.The opposite ends of the levers are pivotally connected to the can clampI58. A lever H0 has its lower end pivotally connected to the can clampI08 at approximately the same point as the forward of the two leversI56. The upper end of the lever H0 is pivotally connected to the spinnerarm I8 at a point in substantially vertical alignment with the lowerpivot of the rear of the two levers I06 when the spinner arm I8 is in ahorizontal position. The lever III may be provided with a telescopingjoint to impart a piston action and which may have a compression springtherein so that the can clamp I58 may engage the side wall of thecontainer before the spinner arm has been completely lowered to ahorizontal position. The compression of the spring within the jointurges the clamp against the container under pressure.

Fi s 3, 4, 6, '7 and 8 show more clearly the stationary arbor I I2 whichconsists of a ring having an outside circumference corresponding to theinside circumference of the retainer wall 52 and adapted to fit withinit. It is also provided with an outwardly projecting annular flangewhich overlays the upper margin of the retaining cylinder 52 but doesnot project beyond the side of the retaining cylinder as the side wallof the container, after it has been placed around the retaining wall 52and seated on the ring 54, projects above the arbor, as shown in Fig. 3,a sufficient amount for the top margin to be rolled doWn against the topsurface of the arbor as shown in Fig. 7.

In Fig. 8 the flange of the arbor II4 projects beyond the retainingcylinder and is provided with an offset portion for seating the rim of acontainer cover IIB. The cover necessarily has a greater diameter thanthe container as it .fits over it in the present instance, and thisarbor may be placed in the same retaining cylinder when spinning a rollon the cover.

It will be noted that in Fig. 6 the container wall has been inserted inthe offset portion of the ring 54 and the spinning flange 38 .is formingan outward roll on the container, while in Fig. '7 the container wallhas been inverted and the outward roll rests on top vof the offsetportion 55 and the spinner head is forming an inward roll, the same sizearbor being used in both instances. In Figs. 6, 7 and 8 the flanges 38attached to the spinning head 36 have different spinning grooves,depending on whether it is an outward roll as shown in Fig. 6, an inwardroll as in Fig. 'I or an inward roll on a cover as in Fig. 8.

The spinner head II8 shown in Figs. 9 and 10 is provided with peripheralrollers I20 rather than detachable flanges as shown in Figs. 6, 7 and 8.The spinner head shown in Figs. 9 and 10 is particularly adapted forspinning an inward roll. The rollers I20 are provided with grooves I2!for engaging the rim of the container and are rotatably mounted on thespindles I23 which are at an upward angle from the plane of the spinnerhead I I3. The rollers freely rotate in contact with the container rimwhen the spinner head is lowered and rotated.

A floating arbor is shown in Fig. 9 and consists of a f oating mem erI40 and a stationary mem-.

her I42. The stationary member I42 is similar to the arbor II2 shown inFigs. 6 and '7 and consists of a ring adapted to flt within theretaining cylinder 52-and having an annular flange overlaying the top ofthe retaining cylinder and supported by it. The floating member I40consists of a disk having a circumference corresponding to that of theretaining cylinder 52. The under face of the member I48 and the upperface of member I42 are provided with a plurality of oppositely disposedrecesses I44 for seating the compression springs I46. The under surfaceof the member I40 is provided with a boss I48 to which the dependinglatch I50 is pivotally secured. The under surface of the fixed memberI42, has a crosspiece] 52 secured to it by screws I54.

The latch I50 has an enlarged base portion I55 having shoulders I56. Thecrosspiece I52 has a circular opening in alignment with the latch I50 ofsuflicient size to permit passage of the base I55 of the latchtherethrough. The base has a stop I58 at its lower end which limits theupward movement of the latch by engaging the crosspiece I52. A tensionspring I60 is secured at one end to the stop I58 and at the other to ascrew I54. The stop I58 may be threaded to the base I55 of the latch sothat the upward movement of the arbor may be limited to a predeterminedheight by screwing or unscrewing the stop. When the spinner head I I8 islowered and the rollers I20 engage the upper margin of the container, itengages the upper surface of the arbor I40 and moves it downward againstthe compression of the springs I46. The latch member I50 movesdownwardly through the opening in the crosspiece I52 and as the base I55moves beyond the opening in the crosspiece I52, the spring I60 moves thelatch member sideways so that the shoulder I56 is against the undersurface of the crosspiece. As the spinner head is raised after spinningan inward roll on the container side wall, the arbor I40 is held in itsdepressed condition by the latch I50.

In operation, the desired spinning flange is placed on the spinner head36 and secured by screws 40. The flange may be such as shown in Fig. 6for an outward roll, Fig. 7 for. an inward roll or Fig. 8 for a cover.If a spinner head such as is shown in Figs. 9 and is used, it is screweddirectly to the shaft 22.

A container side wall blank is placed around each of the retainingcylinders 52 with the lower edge resting on the ring 54. The turntable42 is in a position so that one of the containers 56 is centered underthe spinner head and the latch 50 is in engagement with one of thenotches 48.

The motors 30 and 82 are then turned on sepa-.

rately or together by any suitable switch and continue running while themachine is in use. The motor 30 through shaft 32, gears 34 and 24 andshaft 22 rotates the spinner head 36.

The motor 82 through pulleys 88 and 80 and belt 90 rotates the shaft I6and worm gear I8 which rotates gear 10. When the clutch 88 is-indisengaged position, the motion is not transferred to the eccentric 66.on the pedal switch I02 energizes the solenoid 92 which causes theplunger 96 to move and with it the clutch actuating arm 98 which movesthe clutch to engaged position and the rotary motion of the gear I0 isimparted to the eccentric 66 which, at the start, is in its uppermostposition. In this position, the connecting rod 12 is at the top of itsstroke and the spinning arm I8 is in a raised position. The lever III!vDownward pressure holds the can clamp I08 away from the container wall58.

As the eccentric 66 rotates, the connecting rod 12 lowers the spinningarm I8 and the lever IIO moves the clamp I08 into engagement with thecontainer wall 56. The rotating spinner head is lowered and spins a rollon the upper margin of the container wall. As the eccentric movesupwardly, the spinner head is raised and the clamp I08 moves away fromthe container wall. The pedal switch I02 may then be released and thesolenoid thendisengages the clutch 68. The latch 50 is then movedoutwardly from the notch 48 while the turntable 42 is rotated so thatthe other container wall is centered under the spinner head. The pedalswitch may then be operated and the cycle repeated. During the nextcycle, the completed container wall may be removed and a new one placedaround the retaining cylinder.

When a floating arbor such as is shown in Fig. 9 is used and an inwardroll has been formed on the container, the arbor I40 does not moveupwardly under pressure of the springs I46 as the spinner head H8 israised since it is held in a depressed position by the latch I50.Otherwise, the upper surface of the arbor I40 would engage the beadedroll and lift the container wall 56 upwardly with it, or if the clampI08 is not in a released position as the spinner head moves upwardly thearbor would tend to unroll the inwardly rolled edge of the containerwhich is still held by the clamp.

When a floating arbor such as shown in Fig. 9

is used, it is immaterial that clamp I08 is not released before thespinner head moves upwardly, since the arbor remains in a depressedposition by the latch I50 and spring I60 until manually released. Thistype of arbor has the further advantage of adapting its position to thatof the spinner head as it is engaged by it; the spinner head, when itfirst engages the edge of the container, may not be in a horizontalposition so that it contacts the edge of the carton gradually as it islowered. As a result: the arbor will be tilted accordingly by thespinner head. While certain preferred embodiments of the invention havebeen shown and described, it is to be understood that these areillustrative only, as it is capable of variation to meet differingconditions and requirements, and such modifications are contemplated ascome within the spirit and scope of the appended claims.

We claim:

1. In a device for forming rolled edges on containers, a spinner head, amotor for rotating said spinner head, a vertically pivotal arm forrotatably holding said spinner head and supporting said motor, a rotarybed having a plurality of stations for mounting said containers, saidstations being selectively alignable axially of said spinner head whensaid arm is in a substantially horizontal position, a clampoperativelyconnected to said arm for engaging a container when said arm is in asubstantially horizontal position and said container is in axialalignment with said spinner head, an eccentric for raising and loweringsaid arm and a motor for driving said eccentric.

2. In a device for forming rolled edges on containers, a spinner head,means for rotating said spinner head, a table, a bracket supported onsaid table, a supporting member for raising and lowering said headpivotally connected. to said bracket adjacent one end, a retainingcylmeans REFERENCES CITED The. following references are of record in thefile of this patent:

UNITED STATES PATENTS Number Name Date 941,085 Marthinson Nov. 23, 1909942,890 Dill V Dec. 14, 1909 1,155,787 Bohlman Oct. 5,1915 1,283,786Janisch Nov. 5, 1918 1,401,132 Bond Dec. 2'7, 1921 2,238,330 Koch Apr.15, 1941

